Array initialization in Go - Mini Project: Build & Apply

Array initialization

📖 Scenario: You are working on a simple inventory system for a small store. You need to keep track of the quantity of five different products.

🎯 Goal: Create an array to store the quantities of five products, set a threshold for low stock, find which products are below this threshold, and print their quantities.

📋 What You'll Learn

Create an array called quantities with exactly five integer values: 10, 3, 7, 2, 5

Create an integer variable called lowStockThreshold and set it to 4

Use a for loop with index i to check each quantity in quantities

Create a new array called lowStock to store quantities below the threshold

Print the lowStock array

💡 Why This Matters

🌍 Real World

Stores and warehouses often track product quantities to know when to reorder items.

💼 Career

Understanding arrays and loops is essential for managing collections of data in software development.

1

Create the quantities array

Create an array called quantities with these exact integer values: 10, 3, 7, 2, 5.

Go

# Create the quantities array with 5 integers
# Your code here

Hint

Use Go's array syntax: varName := [size]type{values}

2

Set the low stock threshold

Create an integer variable called lowStockThreshold and set it to 4.

Go

package main

func main() {
    quantities := [5]int{10, 3, 7, 2, 5}
    // Create lowStockThreshold variable and set it to 4
    // Your code here
}

Hint

Use variableName := value to create and set a variable.

3

Find quantities below the threshold

Use a for loop with index i to check each quantity in quantities. Create a slice called lowStock and append quantities less than lowStockThreshold to it.

Go

package main

func main() {
    quantities := [5]int{10, 3, 7, 2, 5}
    lowStockThreshold := 4
    lowStock := []int{}
    // Use a for loop with i to check quantities and append low stock items
    // Your code here
}

Hint

Use len(array) to get the array length and append(slice, value) to add items to a slice.

4

Print the low stock quantities

Write a fmt.Println statement to print the lowStock slice.

Go

package main

import "fmt"

func main() {
    quantities := [5]int{10, 3, 7, 2, 5}
    lowStockThreshold := 4
    lowStock := []int{}
    for i := 0; i < len(quantities); i++ {
        if quantities[i] < lowStockThreshold {
            lowStock = append(lowStock, quantities[i])
        }
    }
    // Print the lowStock slice
    // Your code here
}

Hint

Use fmt.Println(lowStock) to display the slice.